The actor’s rep told People on Sunday (March 31) that he had “voluntarily admitted himself to a treatment facility for substance addiction.”

“He graciously asks for your respect and privacy as he takes the necessary steps towards recovery,” his rep told the mag.

This is the 30-year-old actor’s second trip to rehab. He previously checked into a treatment center when he was 19. Monteith told Parade Magazine in 2011 that he made his struggles with substance abuse public in hopes to help others .

His girlfriend and fellow Glee co-star Lea Michele showed her support for her beau telling People, “I love and support Cory and will stand by him through this. I am grateful and proud he made this decision.”

The couple made their relationship public in April of last year.

There is no word yet if this will effect Monteith’s role on Glee for the remainder of this season.